Replace wstring with string16 in sandbox

sandbox/win/src/interception.h

Index: sandbox/win/src/interception.h
diff --git a/sandbox/win/src/interception.h b/sandbox/win/src/interception.h
index c73b5976fcc7ca4b1301f1de40a48ad32ccdfb52..0e246f10deea56a4f89fbbd161f6272eebf4fa44 100644
--- a/sandbox/win/src/interception.h
+++ b/sandbox/win/src/interception.h
@@ -14,6 +14,7 @@
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
+#include "base/strings/string16.h"
 #include "sandbox/win/src/sandbox_types.h"
 
 namespace sandbox {
@@ -135,7 +136,7 @@ class InterceptionManager {
   struct InterceptionData {
     InterceptionType type;            // Interception type.
     InterceptorId id;                 // Interceptor id.
-    std::wstring dll;                 // Name of dll to intercept.
+    base::string16 dll;                 // Name of dll to intercept.
     std::string function;             // Name of function to intercept.
     std::string interceptor;          // Name of interceptor function.
     const void* interceptor_address;  // Interceptor's entry point.